User interface for a portion of a display screen



The FIGURE is a front view of a user interface for a portion of adisplay screen showing our new design.

The broken line showing of a portion of a rectangular element is forillustrative purposes and forms no part of the claimed design. Thebroken line showing of the small square and the unshaded area therewithin forms no part of the claimed design. The broken line showing ofthe display screen is for illustrative purposes only and forms no partof the claimed design.

The ornamental design for a user interface for a portion of a displayscreen, as shown and described.